A probe capable of inducing a rotating magnetic field to excite a conductive tube includes an array of magnetic field sensors to detect and characterize defects in the tube. The probe includes a circumferential coil assembly and an axial coil assembly both positioned to induce eddy currents in the conductive tube, such that the magnetic field sensors can detect defects in the tube, including defects extending circumferentially, axially, or any combination thereof, whether at the surface or sub-surface of the tube inner and outer walls.

A fluidless roller probe device for performing structural integrity testing. A drum sensor has a shaft, a barrel-shaped inner portion mounted on the shaft, a sensor array having transmit elements and receive elements positioned on an outer surface of the inner portion, and an outer portion positioned over the sensor array. A shaft encoder is coupled to the shaft of the drum sensor. A support structure is coupled to the shaft of the drum sensor. Processing circuitry coupled to the transmit elements and receive elements is configured to activate, based on a signal from the shaft encoder, only that transmit element closest to the surface of the part under test and to calculate an output signal based on signals received from the receive elements. The transmit and receive elements are either ultrasonic transducers or eddy current coils. The transmit and receive elements are arranged in a lattice-like configuration.

An insulation inspection device for accurately inspecting films of wires for an insulation state in a short time before the wires are assembled into a core of an armature in a rotating electric machine, a power supply unit includes a first terminal and a second terminal. A support member supports a plurality of wires covered with films before the wires are assembled into a core of an armature in a rotating electric machine, and the support member is electrically connected to the first terminal. Areas of ends of a plurality of the wires from which areas the films are peeled off are installed on an installation base, and the installation base is electrically connected to the second terminal. A discharge detection unit detects discharge occurring between the support member and each of the wires when the power supply unit applies a voltage to the first terminal or the second terminal.

The provided apparatus for automated nondestructive inspection of a metal structure having a surface comprises an ultrasonic nondestructive inspection unit, a nondestructive inspection unit based on magnetic flux leakage method, an eddy-current nondestructive inspection unit, a control unit connected to the ultrasonic nondestructive inspection unit, the nondestructive inspection unit based on the magnetic flux leakage method and the eddy-current nondestructive inspection unit for sending control signals to carry out inspection of the metal structure, and a navigation unit connected to the control unit, wherein the navigation unit determines a position of said apparatus relative to the metal structure, determines a state of the surface of the metal structure and sends signals into the control unit. The nondestructive inspection unit based on magnetic flux leakage method changes a magnetic field induction generated by this unit from a minimum value close to zero value to a predetermined maximum value.

A garment of vest type (1) incorporating a non-destructive control system includes, as constituent elements, an electronic measurement device (26) able to be connected to a measurement sensor, and linked to an electronic card (20) itself linked to an electrical power supply source (21) and to a viewing and control screen (27), and cables for electrically and electronically linking the constituent elements to one another.

An apparatus for determining the integrity of a tube is provided. The apparatus includes: a body having an extension mechanism and configured to be inserted into the tube; and a flexible eddy current sensor including a flexible housing coupled to the body via the extension mechanism, and one or more coils disposed in the flexible housing. The flexible housing is selectively extendable via the extension mechanism between a first position and a second position. The one or more coils are farther away from the body when the flexible housing is in the second position than when the flexible housing is in the first position. The one or more coils electrically couple with an interior surface of the tube when the flexible housing is in the second position, and the flexible eddy current sensor is operative to selectively induce electrical currents within the tube via the one or more coils.

This invention relates to the monitoring of the integrity of casing, tubing and other strings in oil and gas wells. The technical result of this invention consists in increased accuracy and trustworthiness in detecting and locating transverse and longitudinal defects in well completion components and downhole equipment, in both the magnetic and non-magnetic first, second and other metal barriers. Electromagnetic defectoscopy in multi-string wells includes measuring EMF induced in a coil by eddy currents generated in metal barriers by the decay of the electromagnetic field produced by magnetization current pulses in the coil. A series of pulses of fixed duration in the range of 0.1-1000 ms is fed to each exciter-and-pickup coil to sequentially magnetize all metal barriers starting from the nearest one, with pulse durations increasing for each next barrier. The recorded data are saved and processed by comparing them with model data, and the processing results indicate defects in the metal barriers. The downhole electromagnetic defectoscope contains a case, axially oriented coils with their magnetic axes coinciding with the tool's magnetic axis, and an electronic module, and at least two exciter-and-pickup coils, each consisting of an exciter coil and a pickup coil with a single core. The exciter-and-pickup coils are of different sizes and are spaced apart by a distance of not less than the length of the larger exciter-and-pickup coil.

A method of creating a synthetic aperture. The method may comprise identifying a static configuration, inputting the static configuration into a dynamic controller, configuring a transmitter with the dynamic controller, and configuring a receiver with the dynamic controller. The method may further comprise inputting operational variables and environmental variables into a dynamic configuration, inputting the dynamic configuration into the dynamic controller, and re-configuring the transmitter and the receiver with the dynamic controller.

An eddy current (EC) detection system comprises an EC probe including a plurality of sensors to provide corresponding EC response signals; and processing circuitry to evaluate speed of the EC probe based on a measurement of similarity of the EC response signals; determine whether the speed of the EC probe is too fast or two slow based on quality of the measurement; and generate a command to adjust speed of the EC probe during further EC the inspection.

A leakage-flux flaw detection device includes a plurality of leakage-flux flaw detectors provided at positions not in contact with a steel strip and arranged in a width direction of the steel strip, wherein the leakage-flux flaw detectors each include a rotating disk that faces a surface subjected to flaw detection of the steel strip and that rotates, and a plurality of defect detection heads installed at different positions in a circumferential direction on the rotating disk, that perform direct-current magnetization of the steel strip, and detect leakage flux leaking from a linear defect due to the direct-current magnetization, wherein at least one of the plurality of defect detection heads has an inclination angle different from inclination angles of other defect detection heads, the inclination angle being defined by a tangent line of a rotation trajectory and the magnetization direction at an installation position of the defect detection head.